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Building Technologies Division User Manual LMS14… CC1U7471en
6 The settings in detail 28.01.2015
6.13.6 Minimum limitation of return temperature
Line no. Operating line
3560 Return setpoint min
If the return temperature drops below the adjusted setpoint, maintained boiler return
temperature becomes active. The maintained boiler return temperature allows
consumers to be influenced or a return temperature controller to be used.
Line no. Operating line
3561 Return setpoint min OEM
Minimum limitation of the cascade return temperature (Return setpoint min (3560)) can
be adjusted by the OEM. In that case, the person using the Heating engineer level can
no longer set the minimum limitation of the cascade return temperature below the
minimum value required for the boiler.
Line no. Operating line
3562 Return influence consumers
Off
On
If, with the boilers released, the cascade return temperature drops below the minimum
temperature, a locking signal is calculated.
In the case of pump circuits, the consumer pumps (heating circuit pump, DHW
charging pump, ext. load) are or will stay deactivated if the locking signal exceeds
the respective threshold value
In the case of mixing circuits, the flow temperature setpoint is reduced according to
the locking signal value
Return setpoint min
Return setpoint min OEM
Return influence
consumers
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